But Luca isn't the only Duff family member experiencing a major milestone: Deadline reports that Duff recently signed a deal with 20th Century Fox TV to develop a half-hour comedy for which she will star on and produce. Duff confirmed the news on Twitter Monday – but only after sharing yet another adorable pic of Luca.

"OK it's official!" she wrote. "Very excited about my development deal with 20th century fox!! t.v. here I come! :)"